Roll-grinding machine.



L. R. HUM.

ROM. GBWDING MACHINE.

APPucMrww- HLED ma. 6. was.

a2g19 Patented Jan. 2, 1917.

45 8NEETS-8NEET I.

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1N WEN TOR L. R. HEIM.

MILL GRINDING MACHINE. APPLE/ION min AB. 6. i915;

1330,93? Patented Jan. 2,1917.

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3% 0.2 9 O m m o I I, I on) Q 0 a o I m In 1 8 by HIHIU $1 Y HNHHMIIHI g 1- ATTORNEY L. R. HEIM. I

ROLL GRINDING MACHINE. ueucmou man MAR- a. ma.

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A TTORNEY Patented Jan. 2, 1917.

L. R. HEIM.

ROLL GRINDING MACHINE.

APPLICATION men MAR-6,1915.

1 10,93K Patented Jan. 2, 1917.

4 SHEETS-SHEET 4.

I/WE/VTOH KW MW ATTORNEY train s'raras "raraisr anion.

LEWIS R. HEIM, OF DAiNBURY, CONNECTICUT, ASSIGNOR TO THE BALL AND ROLLER.

BEARING COMPANY, OF DANBURY, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

To all whom it may concern Be it known that I, LEWIS R. HEIM, a citizen ofv the United States, residing at Danbury, county of Fairfield, State of Connecticut, have invented an Improvement in Roll-Grinding lowing is aspecification- This invention has for its object .the pro duotion of a novel method of grinding rolls and of a machine'for carrying my novel method into eflect. View I have devised the novel method and machine which I will now describe, referring to the accompanying drawings forming a part of this specification and using reference characters to indicate the several parts.-

Figure 1 is a front elevation of the machine complete; Fig.2 a plan view; Fig. 3'

grinding operation, and Fig. 7 is a diagrammatic view illustrating operative wheels having their contiguous faces formed with a slight bevel.

The essentials are a grinding wheel having a relatively high surface speed, a carrier for the rolls'to .be operated upon and a wheel moving in the opposite direction andhaving a relatively low surface speed,

the action of which is to cause constant and uniform rotation of the rolls while'being operated upon, at a much lower surface speed than the grinding wheel. This wheel I term the regulating wheel for the reason that it regulates the speed at which the rolls rotate While being operated upon. a

10 denotes the grinding wheel, 11 the regulating wheel having a 1 suitable holding surface, 12 the carrier, 13 the framework of the machine and 14 a hood which incloses the grinding and regulating wheels which for convenience I will term the operative wheels. The grinding wheel is carried by a shaft 15 ournaled in boxes 16 on a slide 17 adjustable longitudinally on a circular Specification of Letters Patent.

Machines, of which the fol-- zontal.

With these objects in.

and .has oscillatory adjustment in a plane that is approximately horizontal. Plate 18 is provided with curved slots 19, and bolts 20 passing through these slots and engaging the frame-work, lock the plate, slide, shaft and grinding wheel at any required adjustment'in a plane that is approximately h0ri-' The slide is adapted to reciprocate in ways upon plate 18 and is provided on its under side with a rack 21. This rack is engaged by a pinion, see dotted lines in Fig. 1 on a transverse shaft 22 journaled in plate 18.' An arm 23 and a. lever 24 extend from a hub 25 on shaft 22. A spring 26 connected to the arm and detachably connected toa pin 27 extending from the framework acts to move the slide, shaftand grind-,

ing wheel inward. The tip of an adjusting screw 28. in a bracket 29 depending from the slide bears against the edge of the plate and limits the inwardimovement of the slide and parts carried thereby. The lever is used to rotate the transverse shaft and move the slide and parts carried thereby outward against the power of the spring, or if preferred the spring may be disconnected from the pin. The lower end of the bracket is split and the parts thereof are drawn together to lock the adjusting screw against rotation, after the adjustment of the slide and parts carried thereby has been determined, by a clamping screw 30.-

The regulating wheel is carried by a shaft 31 journaled in boxes 32 on a slide 33 adjustable longitudinally on a circular plate 34 which rests upon the frame-work and has oscillatory adjustment in a plane that is.

lPatented Jan. 2, 19117.

Application filed M hfi 19115- Serial EEIS plate-18 which rests upon the frame-work justmentwill seldom have to be made so in practice the slide and parts carried thereby,

may be locked in place in any convenient manner, as by causing bolts 37 to clamp cap plate 38 forming part of plate 34 down tightly upon the base of the slide. In practice plates 18 and 34 are preferably provided with trunnions, indicated by dotted lines in Fig. 2, which engage holes in the frame-work and provide a fixed center of oscillation for the plates. The shafts 15 and 31 are rotated at different speeds, the grinding wheel shaft being rotated at a relatively high speed and the regulating wheel shaft at a relatively low speed, by means of belts, not shown, passing over pulleys 39 shown as lying between the boxes in which the respective shafts are journaled. I

It will be noted in Fig. 2 that shafts 15 and 31 areset slightly obliquely to each other so that the contiguous faces of the operative wheels lie closer together upon one side than upon the other and it will be noted in Fig. 1 that the right end of the machine 1s appreciably higher than the other, so as to place the operative faces of the wheels slightly obliquely to the vertical plane, the

' 40, see Fig. 7, so as to provide parallel operative surfaces. The same result would be accomplished, however, by setting one of the shafts, for example the grinding wheel shaft, longitudinally of the machine, and setting the other shaft obliquely. would'require beveling the face of the regulating wheel only. Briefly then, eitheror both of the shafts may be set obliquely and either or both of the operative wheels must be beveled to correspond with the adjust-,

ment of the shafts, which is simply a matter of loosening bolts 20 and 36 and turning plates 18 and 34 to the required position and then tightening up the bolts again, The distance between the operative wheels may be regulated to provide for the grinding. of

different sized rollsby longitudinal adjustment of slides 17 and'33, more especially slide 17, as already explained.

The object in making one end of what may be termed the bed of the machine higher than the other so as to slightly tilt the'operative surfaces ofthe wheels relatively to the vertical plane, is to utilize gravity to throw the weight of the, rolls while being operated upon against'the regu- This lating wheel, the grinding wheel being always placed upon the relatively high side and the regulating Wheel upon the relatively low side. This feature of construction is of importance in. that partly throwing the weight of the rolls against the regulating wheel insures constant and uniform rotation of the rolls thereby and is an aid in securing perfect anduniform grinding of the rolls, scratching of the rolls and the grinding'of flats thereon being wholly-prevented. .The rolls to be operated upon may befed to the machine in any ordinary or preferred man ner. In the present instance I have shown carrier 12 pivoted, as at '41, in a slot in a block or body 42 (shown as substantially in the form of an inverted L) which is bolted or otherwise secured to a standard 43 having both. vertical and lateral adjustment The carrier is locked at the most convenient degree of inclination for feeding the rolls by means of a set screw44.

45 denotes guides for the rolls-which are ordinarily made of sheet metal and are secured to the body on opposite sides of the- After passing the operative faces carrier. of the wheels, the finished rolls drop into a trough 46, secured to the inner end of the opposite side'of the center (which on that side lie at a greater distance apart). The

'carrier, by which they are conducted. out- I .vard between the faces of the wheels on the rolls drop from the trough-into a chute 47 j which delivers them intoa suitable receptacle. i The standard is vertically adjustable 1n loo ways" 48 carried by a slide 49 which is itself laterally adjustable in ways 50 upon the frame-work. The vertical adjustment of I .the standard is effected by means of a screw 51 which is held against longitudinal movement in a cross-piece '52 and engages the slide. The lateral adjustment of the stand-I ard is effected by means of a screw 53 which passes longitudinally through the slide, has unthreaded engagement with cross pieces 54 and is retained against longitudinal movement. The lateral adjustmentof the standard by means of the-slide enables the 'oper-. ator to correctly position the carrierwith relation to the operative wheels and to provide for different sizes of rolls and for changes in thickness of either the grinding or regulating wheel or both. It is'of course necessary that the top' of the carrier should be placed slightly above a horizontal line intersecting the axial line of the wheels, and it is obvious that by raising the carrier the amount of grinding action to which each 125 rolls will .be drawn forward more rapidly.

roll will be subjected will be lessened, as the In connection with the vertical adjustment of the standard, the tilting adjustment of the carriercomes into use. As the conditions in grinding difi'erentrolls will vary it is impossible to arbitrarily determine any in Fig.4 to produce perfectly satisfactory results.

The operation is as follows :-As soon as a roll is picked up by the operative wheels the action is to draw the roll forward and pass it through between the operative faces. It will be noted (see Figs. 2 and 6) that the operative face of the grinding wheel is traveling downward and the operative face of the regulating wheel is traveling upward. As the surface speed of the grinding wheel is much greater than that of the regulating wheel it follows that the rolls being operated upon will be held down upon the carrier, will be rotated and will also be drawn forward. The tendency of the regulating wheel to hold the rolls backward is wholly overcome by the greater surface speed and greater hold upon the rolls of the grinding wheel. The regulating wheel however has this very important function, in that it insures constant and uniform rotation of the rolls so that I am enabled to produce with my novel machine, much more rapidly and economically than has heretoforebeen possible, rolls of the very highest grade.

Having thus described my invention 1 claim 1. A machine of tl'lQChfiIilCtGI described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed and a carrier between said wheels upon which the rolls rest while being operated upon.

2. A machine of the character described comprising a carrier for rolls, a grinding wheel having an operative surface adapted to rotate in the direction of the carrier at a relatively high speed and a regulating wheel cooperating therewith and having an opera tive surface adapted to rotate in the opposite direction at a relatively low speed, whereby constant and uniform rotation, at a lower surface speed than that of the grinding wheel, is imparted to the rolls while being operated upon.

3. A machine of the character described comprising a carrier for rolls, a grinding wheel adapted to be rotated at a relatively high speed, and a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed, the operative surfaces of said wheels lying in a plane oblique to the vertical plane, so as to throw rolls being operated upon toward the regulating wheel.

4. A machine of the character described comprising a carrier for rolls, a grinding wheel having an operative surface adapted to rotate in the direction'of the carrier at a relatively high speed and a regulating wheel cooperating therewith and having an operative surface adapted to rotate in the opposite direction at a relatively low speed, the opera tive surfaces of said wheels lying in a plane oblique to the vertical plane, so as to throw rolls being operated upon toward'the regu-- lating wheel. a

5. Amachine of the character described comprising a carrier, for rolls, a grinding wheel adapted to be rotated at a relatively high speed, and a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed, the axes of said wheels lying obliquely to each other for the purpose set forth and said wheels being provided with parallel operative surfaces.

6. A machine of the character described comprising a carrier for rolls, a grinding wheel havingan operative surface adapted to rotate in the direction of the carrier at a relatively high speed and a regulating wheel cooperating therewith and having an operative surface adapted to rotate in the opposite direction at a relatively low speed, the axes of said wheels lying obliquely to each other for the purpose set forth and said wheels being provided with parallel operative surfaces.

7. A machine of the character described comprising a carrier for rolls, a grinding wheel adapted to be rotated at a relatively high speed and a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed, the axes of said wheels lying obliquely to each other and said wheels being provided with parallel operative surfaces oblique to the vertical plane.

8. A machine of the character described comprising a carrier for rolls, a grinding wheel having an operative surface adapted to rotate in the direction of the carrier ata relatively high speed and a regulating wheel cooperating therewith and having an operative surface adapted to rotate in the opposite direction at a relatively low speed, the axes of said wheels lying obliquely to each other and their operative surfaces being par- 1 opposite direction at a relatively low speed,

and means for adjusting the axes of said wheelsrelatively to each other in substan tially the horizontal plane.

11. A machine of the character described comprising a grinding wheel adapted to be 4 5 rotated at relatively high speed, 'a regulat-.

ing wheel adapted-to be'rotated in the opposite'direction at a relatively low speed, and

means for adj listing the faces of said wheels toward and from each other.

'12. A machine of the character described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed,

means for adjusting the axes of said wheels 7 relatively'to each other in substantially the horizontal plane and means for adjusting v the faces of said wheels toward or from each other.

13. A machine of the character described comprisinga carrier for rolls, a grinding wheel havmg an'operative surface adapted to rotate in'the direction of the carrier at a relatively high speed and a regulating wheel 2 cooperating therewith and having an operative surface adapted to rotate in the opposite direction at a relatively low speed, means for adjusting the axes of said wheels relatively to each other in substantially the horizontal plane and means for adjusting the faces of said wheels toward or from each other. 14. A machine of the character described comprising a grinding wheel adapted, to be I rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed, slides in which said wheels are journaled, oscillatable plates by which the slides are carried, means for locking the slide and 40 means for locking the plates at any required adjustment;

'15. A machine of thecharacter described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed, a

slide upon which the grinding wheel is journaled, means for moving the slide and parts carried thereby inward and means for limiting the inward movement of the slide.

16. A machine of the character described comprising a grindingvwheel adapted to be rotated at arelatively high speed, a regulating wheel adapted to be rotated in. the opposite direction at a relatively low speed, a

slide upon which the grinding wheel is j ournaled and which is provided with a rack, a pinion'engaging the rack, a shaft carrying the pinion and also a hub, an'arm extending I 6.0 from the hub and means engaging the arm -and acting to move the grinding wheel into operative position. z

17. A machine of the character described w comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed and a carrier for rolls between said wheels.

18. A machine of the character described comprising a grinding wheel adapted to, be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at arelatively low speed, a

carrier for rolls between said wheels, and means for imparting vertical adjustment to said carrier.

19. A machine of'the character described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the oppositedirection at a relatively low speed, a carrienfor rolls between said wheels, and means for-imparting lateral adjustment to said. carrier.

20. A machine of the character described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed, a carrier for rolls between said wheels, and a standard to which said carrier is pivotedto swing in the vertical plane, means for adjusting the standard vertically and means for adjusting it laterally.

21. A machine of the character described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the -op posite direction at a relatively low speed, a

carrier for rolls between said wheels, a standard to which said carrier is ivoted to swing in the vertical plane, a longltudinal slide in which said standard is vertically adjustable and meansvfor adjusting the slide.

22. A machine of the character described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel .adapted to be rotated in the opposite direction at a relatively low speed, a

carrier for rolls between said wheels, a standard to which said carrier is pivoted to swing in the vertical plane, a longitudinal slide by which the standard is carried, a screw for adjusting the standard vertically, a set screw" flogl locking it and a screw for adjusting the s 1 e.

23. A machine of the character described comprising a grinding wheel adapted to be rotated at a relatively high speed, a regulating wheel adapted to be rotated in the opposite direction at a relatively low speed,

the axes of said wheels lying obliquely to. each other and the operative faces of said wheels being beveled, a carrier for rolls between the operative faces of said wheels and a trough secured to the inner end of the carrier by which ground rolls are conducted outward between the faces of the wheels on the opposite side of the center. Y c

The combination with grinding and regulating wheels mounted to rotate in 0pposite directions, of a carrier for rolls While being operated upon and a trough which receives the rolls after they have passed the 0perative faces of the wheels.

25. The combination with grinding and regulating wheels mounted to rotate in 0pposite directions, the axes of said wheels being set obliquely, of a carrier for rolls. be-

tween the operative faces of the rolls and a. 10 trough attached to the carrier and extending outward between the wheels.

In testimonywhereof I affix my signature in presence pf .two witnesses.

' LEWIS R. HEIM.

Witnesses:

H. W. MEADE, E. M. CULVER, 

